import re

from django.contrib.auth.backends import ModelBackend
from django.db.models import Q

from user.models import User


def jwt_response_payload_handler(token, user=None, request=None):
    """
    自定义jwt认证成功返回数据
    """
    return {
        'token': token,
        'id': user.id,
        'username': user.username
    }


def get_user_by_account(account):
    """
    根据帐号获取user对象
    :param account: 账号，可以是用户名,email,phone
    :return: User对象 或者 None
    """
    try:
        user = User.objects.filter(Q(username=account) | Q(email=account) | Q(mobile=account)).first()
    except User.DoesNotExist:
        return None
    else:
        return user


class UsernameMobileAuthBackend(ModelBackend):
    """
    自定义用户名或手机号认证
    """

    def authenticate(self, request, username=None, password=None, **kwargs):
        user = get_user_by_account(username)
        if user is not None and user.check_password(password):
            return user
